(19)

(11)

EP 0 027 462 A1

(12)

(43) Date of publication: 29.04.1981 Bulletin 1981/17 (21) Application number: 80900966.0 (22) Date of filing: 24.04.1980

(51) International Patent Classification (IPC):  C09B 11/ 28( . ) G03C 7/ 00( . ) C09B 11/ 24( . ) G03C 8/ 18( . ) (86) International application number: PCT/US1980/000459 (87) International publication number: WO 1980/002334 (30.10.1980 Gazette 1980/25)

(84) Designated Contracting States: DE FR GB NL (30) Priority: 24.04.1979 US 19790032876 24.04.1979 US 19790032888 (71) Applicant: POLAROID CORPORATION Cambridge, Massachusetts 02139 (US)

(72) Inventors: LOCATELL, Louis, Jr. Wellesley Hills, MA 02181 (US) ROGERS, Howard Gardner Weston, MA 02193 (US) BILOFSKY, Ruth Carlson Lexington, MA 02173 (US) CIECIUCH, Ronald F. Brookline, MA 02146 (US) ZEPP, Charles Melvin Boylston, MA 01505 (US) BORROR, Alan Lawrence Lexington, MA 02173 (US) CINCOTTA, Louis Andover, MA 01810 (US) MAHONEY, Edmond M. Billerica, MA 01821 (US) FEINGOLD, Michael Harvey Randolph, MA 02368 (US) (74) Representative: Reitzner, Bruno, Dr., et al  Patentanwälte Dipl.-Ing. R. Splanemann Dr. B. Reitzner Tal 13 D-80331 München D-80331 München (DE)